pivot_root on blackfin

change the root mount

sys_pivot_root(const char *new_root, const char *put_old)
number217 (0xd9)
abicommon
entry pointsys_pivot_root
sinceLinux 3.3 or earlier (3.3 is the first release scanned for blackfin)
man pagepivot_root(2)
sourceelixir.bootlin.com

Registers

registervalue
P0217, the syscall number
R0const char *new_root
R1const char *put_old
R0the return value

Then run excpt 0 to enter the kernel.

This architecture was removed from the Linux kernel in Linux 4.17. The newest release with a syscall table here is Linux 4.16. The other removed architectures live on the historical architectures page.

Same syscall on other architectures

Get this as JSON: https://api.syscall.sh/v2/syscalls/blackfin/pivot_root?kernel=all